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(No Model.) DUBINSKII '3 sheetssheet 1.

ELECTRIC ALARMULOGK.

No. 405,206. PatentedJune 1l, 1889,.

(No Model.) .Bl DUBINSKI. 3 Sheets-Sheet 2.

ELECTRIC ALARM CLOCK.

No. 405,206. A Patented June 11, 1889.

N. PETERS. Plmmrulhagrnpher. wnshingloa. D. C

(No Model.) 3 Sheets-Sheet 8.

B. DUBINSKI.

ELECTRIC ALARM CLOCK.

No. 405,206. Patented June 1l, 1889.

N. PCTUIS. PhamLixlmmphnr. wmhmgmn. u4 CA UNITED STATES PATENT OEEICE.

BENJAMIN DUBINSKI, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TOCHARLES P. BUDD, OF SAME PLACE.

ELECTRIC ALARM-CLOCK.

SPECIFICATION forming part of Letters Patent No. 405,206, dated June 11,1889.

Application tiled March 18,1889. Serial No. 303,693. (No model.)

To all whom it may concern.-

Beit known that I, BENJAMIN DUBINSKI,

of St. Louis, Missouri, have made a new and useful Improvement inElectric Alarm-Clocks,

of Vwhich the following is a full, clear, and

exact description.

The improvement consists, mainly, in the means for closing the electriccircuit, substantially as hereinafter described and claimed,

To aided by the annexed drawings, making part of this specification, inwhich Figure l is a face view of a twenty-foun hour clock having theimprovement, a portion of the dial being broken away to exhibit the I5interior construction; Fig. 2, a section on the line II II of Fig. l;Fig. 3, a detail, being a section of that part of the clock-frame havingthe binding-screws; Fig. 4, a view in perspective of the spring used tosecure the pins, 2o and Fig. 5 a face View of a twelve-hour clock havingthe improvement.

The same letters of reference denote the same parts.

A,Figs. 1,2, and 5, respectively, represents an .2 5 ordinary clockmodified or supplemented by the improvement in question. Its dialappears at cc,its minute-hand at a', its hour-hand at a2,

its Works at as; and B represents a frame, which serves to support an dinclose the parts named,

3o substantially as shown, and also to support a series of pins C. Theseries extends around the clock, and the pins are arranged radially withreference to the shaft a, which carries the hands a a2, and theirpositions are re- 3 5 spectively opposite or in line with the divisionsd of a graduation I), which encircles the dial a, and whose divisionsare numbered or marked to correspond with numbers or marks c of theordinary graduation E of the clock,

4o substantially as shown-that is, the arrangement shown in Fig. l is atwenty-four-hour one, and each hour-division is subdivided into fourdivisions, and there is a pin O for each subdivision. In Fig. 5 thearrangement is a twelve-hour one, and each hour-division is subdividedinto four divisions, and there is a pin C for each subdivision; but anystyle of graduation and any desired number of pins may be used.

The pins C can be adjusted longitudinally in the frame B. Each pinindependently of lettered O, Fig. 1*-they are in position to be 6o vtouched by the arm G, Figs. l, 2, and 5, or other part attached to andcarried around with the shaft at, and when a contact is thus established the electric circuit is closed and the alarm F is sounded.

H I represent the usual wires for conducting the electric current. Thewire IfI, by means of the binding-screw 72, Figs. 1 and 3, is connectedwith the frame B, which, as well as the pinsand their bearings, is of asuitable 7o material for conducting the current.

The wire I is supported by the binding screw t', Figs. 1 and 3, but theconstruction is such as to cause the current to pass through thebinding-screw to the wire I', Figs. l and 3, 7 5 which lead to thealarm. The wire II', Figs.

l and 5, connects the alarm with the clockworks, which are also ofsuitable material to conduct the current to the arm G.

The alarm F is usually any form of the or- 8o dinary electric bell.

The operation is as follows: Suppose it is desired to sound the alarm ateighteen oclock fifteen minutes. The pin C', Fig. l, is pushed inward inthe bearings until its inner end comes into the path traveled by the armG, and as that arm is adjusted to keep with the hour-hand it is causedto form a contact with the pin at the time named, and as long as thecontact continues the alarm sounds. The arm 9o G may be constructed inany suitable manner to effect and to maintain the current for a suitablelength of time. As shown, its end g is in the form of a spring, which,as the arm G moves around, rubs against the pin and yields sufficientlyfor the arm to be carried past the pin, after which the alarm ceases tosound. The pins, it will be seen, are arranged to be adjusted in a planeparallel with the clock-face, whichI consider the most desirable rocmethod. The pins are held in either of the described positions by meansof the spring J, Figs. 2 and -nainely, a strip of spring materialnotched at its ends j j to bear upon the pins, and between its ends bentupward to bear against the part Z) of the frame B. By this ineans thepins can be readily adjusted and sufficiently secured in either of theirpositions.

The divisions of the two graduations are preferably respectivelyopposite each other, as is shown in Figs, l and 5.

claiinl. The combination of the clock and the encircling series of pins,said clock havin g au arni rotating with its hour-hand shaft, and saidpins being adjustable into and out of the path of said rotating arm, asand for the purpose described. A

2. The combination of the clock, the arin rotating with its hour-hand,the frame, and the series of adjustable pins, said series be ing in apiane parallel with the clock-face, substantially as and for the purposedescribed.

3. The combination of the clock, the arm rotating with its hour-hand,the frame, the

series of adjustable pins, the Wires, and the alarm, substantially asand for the purpose described.

l. The combination of the frame, the pin C, the pin-bearings, and thespring, said spring bearing upon said pin and also against said traine,substantially as described, and for the purpose set forth.

5. The combination of the clock having its graduation with the framehaving its graduation, and the series of pins, substantially as and forthe purpose described.

G. The eonibination of the clock having its graduation, the encirclingiframe having its graduation, the series of adjustable pins, the armmoving with the shaft al, and the electrie alarni, substantially asdescribed.

Witness iny hand this 16th day of March, 1889.

BENJAMIN DUI-SINSKI.

iVitnesses:

C. 1D. MOODY, D. NV. A. SANFon'o.

